1807, a hybrid formation from tide (n.) + Latin-derived suffix -al (1). A tidal wave (1819) properly is high water caused by movements of the tides; erroneous use for "tsunami, great ocean wave caused by an earthquake, etc." is recorded from 1868.
权威例句
1. The tidal stream or current gradually decreases in the shallows.
浅滩上的潮水逐渐退去。
2. a tidal wave of crime
犯罪高峰期
3. The river is tidal up to this bridge.
这条河的潮水会涨到这座桥.
4. A tidal wave caused by the earthquake hit the coast causing catastrophic damage.
地震引起的海啸袭击了沿海地区,导致灾难性的破坏。
5. In the year 1091, London Bridge was destroyed by a tidal surge during a storm.